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Rotary pump device

A rotary and pump device technology, applied in rotary piston pumps, rotary piston machines, rotary piston/oscillating piston pump components, etc., can solve the problems of assembly errors and difficult assembly.

Inactive Publication Date: 2012-04-11
ADVICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this structure, the cylinders on both sides are assembled with the drive shaft as a reference. However, in addition to the assembly error of the two cylinders relative to the drive shaft, there will also be problems with the sealing member and cylinder housed in the cylinder. Assembling errors between cylinders, therefore, it is difficult to assemble the drive shaft with high precision, and furthermore it is difficult to assemble the two rotors and sealing parts with high precision

Method used

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Examples

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Effect test

no. 1 approach

[0032] Hereinafter, the present invention will be described with reference to embodiments shown in the drawings. figure 1 A schematic diagram of brake piping of a vehicle brake device to which a rotary pump device according to an embodiment of the present invention is applied. Below, based on figure 1 The basic configuration of a vehicle brake device will be described. Here, an example in which the brake device for a vehicle according to the present invention is applied to a vehicle constituting a hydraulic circuit of front and rear piping in a front-wheel drive four-wheel vehicle is described, but it can also be applied to a vehicle equipped with a right front wheel. -X piping, etc. for each piping system of the left rear wheel, left front wheel, and right rear wheel.

[0033] exist figure 1Among them, when the driver steps on the brake pedal 11 as a brake operation member, the stepping force is increased by the booster device 12, and the master pistons 13a, 13b arranged i...

Embodiment approach

[0118] In the above-mentioned embodiment, an example of the rotary pump device in which the cylinder tube 71 and the seal mechanisms 111 and 112 can be assembled with the drive shaft 54 ​​as a reference was shown, but each part constituting the rotary pump device can be appropriately modified. Design changes.

[0119] For example, metal rings 111f, 112f are provided as reinforcing rings for reinforcing the resin members 111a, 112a in the hollow parts 111h, 112h of the resin members 111a, 112a, but as long as the hardness is higher than that of the resin members 111a, 112a The hardness of the material only needs to be high, and it does not need to be made of metal, and other materials (for example, ceramics) may be used. That is, any material may be used as long as it can suppress the gripping of the drive shaft 54 ​​accompanying the deformation of the resin members 111a and 112a when a high pressure is applied.

[0120] Furthermore, the first bearing 51 is configured by a nee...

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Abstract

A rotary pump device is provided in which a drive shaft (54) is inserted into a center hole (71a) of a cylinder (71) that forms rotor chambers (100a, 100b), and into outer rotors (19a, 39a) and inner rotors (19b, 39b) of rotary pumps (19, 39). In the rotary pump device, seal mechanisms (111, 112) that include hollow-shaped resin members (111a, 112a) and annular rubber members (111b, 112b) are arranged on an opposite side to the cylinder (71) with respect to the rotary pumps. Metal rings (111f, 112f) are arranged in hollow portions (111h, 112h) of the resin members (111a, 112a) in the seal mechanisms (111, 112) so that the drive shaft (54) is inserted into an inner periphery of the metal rings (111f, 112f) with a minimum clearance.

Description

technical field [0001] The present invention relates to a rotary pump device including a rotary pump such as a trochoid pump. Background technique [0002] Conventionally, Patent Document 1 proposes a brake device having a structure in which a cylindrical pump main body incorporating a rotary pump is inserted into a concave portion of a housing of a brake fluid pressure control actuator and fixed. In this rotary pump device, a cylinder (cylinder) is disposed on both axial end surfaces of a rotary pump having an outer rotor and an inner rotor, and a seal member housed in the cylinder, a seal surface formed in the cylinder, and a The outer rotor and the inner rotor are in contact with each other to seal the relatively low pressure area and the relatively high pressure area of ​​the rotary pump. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2006-125272 [0004] In the rotary pump device such as Patent Document 1 mentioned above, in order to improve the pump effici...

Claims

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Application Information

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IPC IPC(8): F04C2/10
CPCF04C2/10F04C15/0038
Inventor 中村祐树安藤之人吉冈信彦永沼贵宽川端伦明
Owner ADVICS CO LTD